/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:53:01,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:53:01,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:53:01,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:53:01,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:53:01,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:53:01,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:53:01,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:53:01,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:53:01,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:53:01,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:53:01,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:53:01,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:53:01,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:53:01,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:53:01,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:53:01,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:53:01,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:53:01,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:53:01,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:53:01,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:53:01,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:53:01,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:53:01,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:53:01,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:53:01,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:53:01,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:53:01,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:53:01,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:53:01,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:53:01,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:53:01,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:53:01,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:53:01,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:53:01,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:53:01,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:53:01,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:53:01,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:53:01,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:53:01,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:53:01,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:53:01,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:53:01,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:53:01,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:53:01,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:53:01,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:53:01,342 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:53:01,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:53:01,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:53:01,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:53:01,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:53:01,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:53:01,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:53:01,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:53:01,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:53:01,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:53:01,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:53:01,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:53:01,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:53:01,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:53:01,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:53:01,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:53:01,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:53:01,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:53:01,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:53:01,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:53:01,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:53:01,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:53:01,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:53:01,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:53:01,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:53:01,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:53:01,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:53:01,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:53:01,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:53:01,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:53:01,813 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:53:01,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label55.c [2020-10-28 10:53:01,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7009fe48a/d25accbc066b4bf18c8c91427610f430/FLAG0b9d4c43d [2020-10-28 10:53:03,118 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:53:03,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label55.c [2020-10-28 10:53:03,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7009fe48a/d25accbc066b4bf18c8c91427610f430/FLAG0b9d4c43d [2020-10-28 10:53:03,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7009fe48a/d25accbc066b4bf18c8c91427610f430 [2020-10-28 10:53:03,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:53:03,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:53:03,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:53:03,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:53:03,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:53:03,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:03" (1/1) ... [2020-10-28 10:53:03,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767169d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:03, skipping insertion in model container [2020-10-28 10:53:03,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:03" (1/1) ... [2020-10-28 10:53:03,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:53:03,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:53:05,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:53:05,902 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:53:07,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:53:07,311 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:53:07,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07 WrapperNode [2020-10-28 10:53:07,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:53:07,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:53:07,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:53:07,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:53:07,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (1/1) ... [2020-10-28 10:53:07,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (1/1) ... [2020-10-28 10:53:07,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (1/1) ... [2020-10-28 10:53:07,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (1/1) ... [2020-10-28 10:53:07,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (1/1) ... [2020-10-28 10:53:07,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (1/1) ... [2020-10-28 10:53:07,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (1/1) ... [2020-10-28 10:53:07,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:53:07,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:53:07,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:53:07,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:53:07,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:53:08,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:53:08,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:53:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:53:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:53:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:53:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:53:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:53:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:53:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:53:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:53:08,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:53:08,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:53:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:53:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:53:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:53:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:53:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:53:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:53:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:53:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:53:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:53:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:53:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:53:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:53:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:53:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:53:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:53:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:53:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:53:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:53:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:53:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:53:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:53:23,162 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:53:23,162 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:53:23,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:23 BoogieIcfgContainer [2020-10-28 10:53:23,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:53:23,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:53:23,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:53:23,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:53:23,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:53:03" (1/3) ... [2020-10-28 10:53:23,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393cee5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:53:23, skipping insertion in model container [2020-10-28 10:53:23,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:07" (2/3) ... [2020-10-28 10:53:23,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393cee5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:53:23, skipping insertion in model container [2020-10-28 10:53:23,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:23" (3/3) ... [2020-10-28 10:53:23,178 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label55.c [2020-10-28 10:53:23,190 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:53:23,197 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:53:23,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:53:23,252 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:53:23,252 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:53:23,252 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:53:23,252 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:53:23,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:53:23,253 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:53:23,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:53:23,253 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:53:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:53:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1657 [2020-10-28 10:53:23,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:53:23,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:53:23,449 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:53:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:53:23,460 INFO L82 PathProgramCache]: Analyzing trace with hash -504284697, now seen corresponding path program 1 times [2020-10-28 10:53:23,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:53:23,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501742179] [2020-10-28 10:53:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:53:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:30,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:30,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1680 [2020-10-28 10:53:30,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:53:30,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5250 [2020-10-28 10:53:30,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:30,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:53:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:53:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1671 [2020-10-28 10:53:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:53:32,033 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:53:32,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:53:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:32,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:32,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:53:32,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:53:32,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 10:53:32,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:32,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:53:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:53:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:53:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:53:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:53:34,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501742179] [2020-10-28 10:53:34,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:53:34,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:53:34,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045959247] [2020-10-28 10:53:34,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:53:34,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:53:34,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:53:34,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:53:34,914 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:53:35,099 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 10:54:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:54:08,671 INFO L93 Difference]: Finished difference Result 6314 states and 11856 transitions. [2020-10-28 10:54:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:54:08,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1656 [2020-10-28 10:54:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:54:08,741 INFO L225 Difference]: With dead ends: 6314 [2020-10-28 10:54:08,741 INFO L226 Difference]: Without dead ends: 4024 [2020-10-28 10:54:08,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:54:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-28 10:54:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4009. [2020-10-28 10:54:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4009 states. [2020-10-28 10:54:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 6272 transitions. [2020-10-28 10:54:09,012 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 6272 transitions. Word has length 1656 [2020-10-28 10:54:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:54:09,020 INFO L481 AbstractCegarLoop]: Abstraction has 4009 states and 6272 transitions. [2020-10-28 10:54:09,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:54:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 6272 transitions. [2020-10-28 10:54:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2020-10-28 10:54:09,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:54:09,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:54:09,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:54:09,224 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:54:09,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:54:09,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1869894685, now seen corresponding path program 1 times [2020-10-28 10:54:09,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:54:09,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235575683] [2020-10-28 10:54:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:54:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:54:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:14,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:54:14,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1691 [2020-10-28 10:54:14,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:54:14,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-28 10:54:14,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:54:14,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:54:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:54:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:54:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:54:14,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:54:16,251 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:54:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:54:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:54:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:16,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:54:16,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:54:16,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:54:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:54:16,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:54:16,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:54:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:54:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:54:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:54:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:54:16,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:54:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:54:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:16,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:54:16,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:54:16,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:54:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:54:16,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:54:16,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:54:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:54:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:54:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:54:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:54:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:54:17,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235575683] [2020-10-28 10:54:17,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:54:17,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:54:17,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513539531] [2020-10-28 10:54:17,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:54:17,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:54:17,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:54:17,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:54:17,539 INFO L87 Difference]: Start difference. First operand 4009 states and 6272 transitions. Second operand 7 states. [2020-10-28 10:54:17,746 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 10:54:19,914 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 10:55:04,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:55:04,448 INFO L93 Difference]: Finished difference Result 11902 states and 18791 transitions. [2020-10-28 10:55:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:55:04,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1665 [2020-10-28 10:55:04,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:55:04,498 INFO L225 Difference]: With dead ends: 11902 [2020-10-28 10:55:04,499 INFO L226 Difference]: Without dead ends: 7899 [2020-10-28 10:55:04,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:55:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2020-10-28 10:55:04,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7698. [2020-10-28 10:55:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7698 states. [2020-10-28 10:55:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7698 states to 7698 states and 11291 transitions. [2020-10-28 10:55:04,798 INFO L78 Accepts]: Start accepts. Automaton has 7698 states and 11291 transitions. Word has length 1665 [2020-10-28 10:55:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:55:04,798 INFO L481 AbstractCegarLoop]: Abstraction has 7698 states and 11291 transitions. [2020-10-28 10:55:04,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:55:04,799 INFO L276 IsEmpty]: Start isEmpty. Operand 7698 states and 11291 transitions. [2020-10-28 10:55:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1671 [2020-10-28 10:55:04,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:55:04,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:55:04,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:55:04,927 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:55:04,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:55:04,930 INFO L82 PathProgramCache]: Analyzing trace with hash 490633727, now seen corresponding path program 1 times [2020-10-28 10:55:04,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:55:04,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571274804] [2020-10-28 10:55:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:55:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:10,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:10,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1696 [2020-10-28 10:55:10,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:55:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 10:55:10,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:10,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:55:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:55:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 10:55:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:55:10,705 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:55:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:55:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:10,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:55:10,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:55:10,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:10,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:55:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:55:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:55:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:55:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:55:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:10,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:10,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 10:55:10,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:55:10,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:10,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:55:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:55:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:55:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:55:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:55:12,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571274804] [2020-10-28 10:55:12,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:55:12,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:55:12,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220961548] [2020-10-28 10:55:12,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:55:12,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:55:12,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:55:12,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:55:12,420 INFO L87 Difference]: Start difference. First operand 7698 states and 11291 transitions. Second operand 8 states. [2020-10-28 10:55:12,599 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 10:55:12,921 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-28 10:55:14,115 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-28 10:56:13,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:56:13,065 INFO L93 Difference]: Finished difference Result 30296 states and 46440 transitions. [2020-10-28 10:56:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:56:13,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1670 [2020-10-28 10:56:13,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:56:13,162 INFO L225 Difference]: With dead ends: 30296 [2020-10-28 10:56:13,163 INFO L226 Difference]: Without dead ends: 22604 [2020-10-28 10:56:13,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:56:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22604 states. [2020-10-28 10:56:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22604 to 22525. [2020-10-28 10:56:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22525 states. [2020-10-28 10:56:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22525 states to 22525 states and 31412 transitions. [2020-10-28 10:56:13,813 INFO L78 Accepts]: Start accepts. Automaton has 22525 states and 31412 transitions. Word has length 1670 [2020-10-28 10:56:13,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:56:13,814 INFO L481 AbstractCegarLoop]: Abstraction has 22525 states and 31412 transitions. [2020-10-28 10:56:13,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:56:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 22525 states and 31412 transitions. [2020-10-28 10:56:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679 [2020-10-28 10:56:13,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:56:13,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:56:13,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:56:13,909 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:56:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:56:13,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1927910040, now seen corresponding path program 1 times [2020-10-28 10:56:13,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:56:13,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510102189] [2020-10-28 10:56:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:56:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:56:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:15,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:19,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:56:19,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1704 [2020-10-28 10:56:19,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:56:19,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 10:56:19,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:56:19,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:56:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:56:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:56:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:56:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:56:19,914 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:56:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:56:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:56:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:19,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:56:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:56:19,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:56:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:56:19,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:56:19,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:56:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:56:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:56:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:56:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:56:20,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:56:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:56:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:20,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:56:20,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:56:20,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:56:20,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 10:56:20,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:56:20,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:56:20,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:56:20,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:56:20,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:56:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:56:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:56:21,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510102189] [2020-10-28 10:56:21,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:56:21,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:56:21,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084025381] [2020-10-28 10:56:21,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:56:21,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:56:21,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:56:21,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:56:21,251 INFO L87 Difference]: Start difference. First operand 22525 states and 31412 transitions. Second operand 8 states. [2020-10-28 10:56:21,455 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-28 10:56:22,357 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-28 10:56:24,928 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 80